mimblewimble/grin

Study support of vaults in grin/mimblewimble

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#71 opened on Jul 2, 2017

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help wantedresearch

Description

Grin should already support in the near future:

  • multisig using aggregate (formerly Schnorr) signatures ;
  • time-locked transactions.

Using these primitives, figure out how to implement vaults [1] [2].

[1] http://hackingdistributed.com/2016/02/26/how-to-implement-secure-bitcoin-vaults/ [2] http://fc16.ifca.ai/bitcoin/papers/MES16.pdf

Contributor guide

Tech stack
rust
Domain
securityblockchain
Issue type
research
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
5
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
understanding of Mimblewimbleknowledge of multisig signaturestime locked transactionsRust proficiency
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
5
Research direction
Review the linked papers on Bitcoin vaults (references [1] and [2]) and explore how the primitives of multisig (aggregate signatures) and time locked transactions already supported in Grin can be combined to realize vault functionality. Examine existing Grin codebase for relevant modules and discuss possible approaches in the issue comments.